All computers on which the Siebel Enterprise Server software is installed must meet the hardware and software requirements detailed in the Certifications tab on My Oracle Support or elsewhere. The Siebel Enterprise Server installer verifies that you have required software at the necessary version levels.

In general, you must have installed all of the third-party products that you will require for the Siebel Enterprise Server software that you are installing. Some products can be installed after Siebel Business Applications software. Such products are listed in the Certifications tab on My Oracle Support.

You must have created a Siebel Business Applications installation image that includes all of the modules and components that you require. Users who run Siebel installers or modify installer files must have the necessary permissions to the network directories where the Siebel image is located. For information about creating the Siebel installation image, see Creating the Siebel Installation Image on the Network.

When you install multiple components of the Siebel Enterprise Server, such as Siebel Gateway Name Server and Siebel Server, on the same computer, they are installed into a common root directory, such as /siebel/8.1.1.11.0/ses or /siebel/8.2.2.4.0/ses. The environment variable SIEBEL_ROOT might be set differently in different locations, to reflect the full path to the installation location of a specific component, such as Siebel Server.

If you will be clustering the Siebel Gateway Name Server or Siebel Server, then plan your use of clustering or redundant disk arrays (RAID) to configure against a single point of failure. For more information about this topic, see Siebel Deployment Planning Guide.

Each computer that supports Siebel Enterprise Server software must have TCP/IP network connectivity to other computers that are part of or that work with the Siebel Enterprise Server. For example, the Siebel Gateway Name Server computer requires connectivity to all of the Siebel Server computers. Verify connectivity between all such computers, using the ping utility. For more information, see Verifying Network Connectivity for the Siebel Server Computer.

Before running any of the Siebel Configuration Wizards in which you will specify a server computer's host name or IP address, validate the host name or IP address that you will enter during configuration. You can use the ping utility for this purpose. The host name and IP address data that you specify when you run the wizards must be correct in order for the configuration process to proceed correctly.

Verify that the network names of the servers that will support the Siebel Gateway Name Server and all of the Siebel Servers are recorded in Siebel Deployment Planning Worksheet. You need this information when configuring the Siebel Servers.

If you intend to use Transport Layer Security (TLS) or Secure Sockets Layers (SSL) with any Siebel Business Applications modules described in this guide, then you must review all of the applicable information before you configure the software. For details, see Siebel Security Guide.

If you are not yet ready to configure TLS or SSL for Siebel Enterprise Server (and Siebel Web Server Extension), then you can either postpone configuration until you are fully ready to configure TLS or SSL, or you can configure these components without TLS or SSL and reconfigure them later to use TLS or SSL.

Before you configure Siebel Enterprise Server components, you must have created the Siebel File System. It must meet all of the criteria described in Creating the Siebel File System.

Before you install Siebel Business Applications, review documented information about the installation and configuration process and applicable requirements. Customers must manage the overall installation and configuration process carefully to ensure success.